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How Aids affects world population

Extracts from this document...

Introduction

What is Aids, and does it affect World population? Aids are the mutation of a virus called HIV (Human Immunodeficiency virus). HIV infects cells in the immune system and the central nervous system. The main type of cell that HIV infects is the T helper lymphocyte. These cells play an important role in our immune system, by coordinating the actions of other immune system cells. When there is a large reduction of T helper cells, the immune system is severely weakened. HIV infects the T helper cell because it has the protein CD4 on its surface; HIV uses it to attach itself to the cell before gaining entry. This is why the T helper cell is sometimes referred to as a CD4+ lymphocyte. Once it is inside the cell, HIV makes new copies of itself, which can then go on to infect other cells. In time HIV infection leads to a severe reduction in the number of T helper cells available to help fight disease. This may take several years. 1. Helper T Cells. Helper T cells are T lymphocytes that belong to the CD4+ subset. These cells have a number of direct functions but they get their name from the help provide to other types of effectors cells, such as B cells and cytotoxi T lymphocytes AKA CTLs. ...read more.

Middle

'Heterosexual: a person who has sexual relations with the opposite sex.'4 The graph shows heterosexuals are more likely to be infected by HIV. There is an increase in the people being infected by HIV, the line gradualy goes up but between 1998-2002 the graph abruptly went up. 'Homoesexual: a person sexually attracted to persons of the same sex. Homosexuals include males (gays) and females(lesbians)'5. There is a difference between homosexuals and heterosexuals, less homosexuals are infected by HIV, the graph shows a slight increses in people being infected by HIV. Bisexual infections are the lowest of the three. The graph above shows 'Cumulative HIV infection among injecting Drug Users since Q4 of 1996' the graph also shows people tested with people with AIDS. Just like the first graph between 1996-2002 again there is a tremendous increses for HIV infections. The people found positive of jus AIDS are much more fewer than HIV, but then there is an increase from 1998-2002. How HIV/AIDS affects human population. The aids virus is one of the most destructive health crises of the 19th century, destroing families and communities through out the world. It was estimated by 2005 more than 25 million people had died and an estimate of 39 million were lliving with HIV. About 4 million(estimated) ...read more.

Conclusion

This is a concern because it diverts attention to HIV/AIDS leaving other health problems,and in this current economic climate less people are treated resulting to more deaths. HIV/AIDS and stigmas- Not only does HIV/AIDS affect the human body physically it also affects it psychologicaly. Aids stigma is another word for how peope label individuals which are found positive of HIV/AIDS. Victims are rejected by the public, family, peers and wider community. This affects the person psychologicaly because hes rejected by society. Sometimes people don't want to eat or share with them for example, cups, cutlery sets. People don't want to socialise with them, they therefore dont want to go for treatment. Aids stigma and discrimination coincide with other forms of stigma and descrimination, such as racism , homophobia or misogyn and are directed towards people involved in what is considered as socially unacceptable activites such as prostituion or drug use. Stigma does'nt only make it difficult for people to accept they have HIV and need to treatment on a personal level, this also interferes with the attempt to fight and stop the spread of AIDS as a whole. 7 Refrences: 1. http://www.avert.org/howcan.htm (1,3) 2. http://users.rcn.com/jkimball.ma.ultranet/BiologyPages/T/Th1_Th2.html 4. http://www.medterms.com/script/main/art.asp?articlekey=3745 5. http://www.medterms.com/script/main/art.asp?articlekey=3781 6. http://scuba-doc.com/AIDSadv.htm The effects of a physical activity program on HIV-positive men and women. Author Reussner D; Kraus MF; Lamwersiek H 7. United Nations, The Impact of AIDS: 63. ...read more.

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